Compact laser spectroscopic sensor head prototype for time-resolved breath oxygen monitoring

Link Patrick, Gerard Wysocki

Research output: Contribution to journalArticlepeer-review


A small and lightweight optical sensor head prototype with a disposable airway adapter for continuous mainstream monitoring of oxygen at high sampling rate is designed and tested on an optical benchtop. In terms of its size and functionality, the sensor head design is similar to current capnography systems from leading medical equipment manufacturers, and it has been designed within constraints of potential applications in direct breath oxygen monitoring that require direct interaction with the gas inside a breathing tube. The measurement precision of 0.1% O2 with a 10 ms integration time are well within the performance required for breath O2 monitoring applications.

Original languageEnglish (US)
Article number026003
JournalJournal of Breath Research
Issue number2
StatePublished - Apr 2023
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Pulmonary and Respiratory Medicine


  • breath
  • breath sensor
  • laser spectroscopy
  • oxygen
  • real-time monitoring
  • ventilation


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